GB782720A - Improvements in and relating to an alarum time-piece - Google Patents

Improvements in and relating to an alarum time-piece

Info

Publication number
GB782720A
GB782720A GB21679/55A GB2167955A GB782720A GB 782720 A GB782720 A GB 782720A GB 21679/55 A GB21679/55 A GB 21679/55A GB 2167955 A GB2167955 A GB 2167955A GB 782720 A GB782720 A GB 782720A
Authority
GB
United Kingdom
Prior art keywords
alarm
lever
spring
hour wheel
wheel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB21679/55A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tavannes Watch Co SA
Original Assignee
Tavannes Watch Co SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tavannes Watch Co SA filed Critical Tavannes Watch Co SA
Publication of GB782720A publication Critical patent/GB782720A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B23/00—Arrangements producing acoustic signals at preselected times
    • G04B23/02—Alarm clocks
    • G04B23/06—Alarm clocks adjustable for several preselected times with automatic stopping of the signal

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)

Abstract

782,720. Clocks and watches. TAVAN. NES WATCH CO., SOC. ANON. July 27, 1955 [Aug. 28, 1954), No. 21679/55. Class 139 In an alarm timepiece the hour wheel is moved axially by a spring pressed rigid lever to release the alarm hammer and the said lever arrests the alarm mechanism after a predetermined unwinding of the alarm spring. The hour wheel 6, Figs. 1 and 2, rotates above the alarm wheel 8 and is urged downwardly by a lever 5 acted on by a spring 13. A nose 15 of the lever 5 normally engages a pin 16 on the alarm hammer 4 which is thereby locked. When two pins 9, 10 on the hour wheel 6 coincide with two slots 9a, 10a on the alarm wheel 8 the spring 13 is effective and axially moves the hour wheel 6 through the lever 5 which frees the hammer 4 for actuation by the alarm spring. A gear 17 is rotated by the alarm spring and rotates a coaxial heart-shaped cam 19 through a lost motion pin and slot connection 20, 18 until a conical projection 14 on the cam 19 meets a projection 21 of the lever 5. The hour wheel 6 continues to rotate and the pins 9, 10 ride out of the slots 9a, 10a so that the lever 5 is returned to its initial position and. the projection 21 frees the pin 14 whereupon a spring 22 moves the heart-shaped cam to its initial position.
GB21679/55A 1954-08-28 1955-07-27 Improvements in and relating to an alarum time-piece Expired GB782720A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH782720X 1954-08-28

Publications (1)

Publication Number Publication Date
GB782720A true GB782720A (en) 1957-09-11

Family

ID=4536352

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21679/55A Expired GB782720A (en) 1954-08-28 1955-07-27 Improvements in and relating to an alarum time-piece

Country Status (1)

Country Link
GB (1) GB782720A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3261157A (en) * 1963-10-28 1966-07-19 Tavannes Watch Co Sa Timepiece alarm mechanism
US3678679A (en) * 1969-06-26 1972-07-25 Eastern Time Ltd Alarm clocks and watches

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3261157A (en) * 1963-10-28 1966-07-19 Tavannes Watch Co Sa Timepiece alarm mechanism
US3678679A (en) * 1969-06-26 1972-07-25 Eastern Time Ltd Alarm clocks and watches

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